Question

From the UPSC AC exam! If 9 mangoes cost as much as 5 oranges, 5 oranges as much as 3 apples, 4 apples as much as 9 pinesapples and if 3 pineapples cost 48, how much does a mango cost?

Answer 1

The cost of one Mango is 12

Explanation:
9 Mangoes = 5 Orange
5 Orange = 3 apple
4 apple = 9 pineapple 
3 pineapple = 48,

hence 1 Pineapple = 16
1 apple = 9/4 X 16 =36
1 orange = (3/5) X 36 = 21.6
1 mango = (5/9) X 21.6 = 12